import React, { useCallback } from 'react';
import { Table as SemanticTable } from 'semantic-ui-react';
import { map } from 'lodash-es';

import { useRelatableStateContext } from '../states';
import arrayHasItems from '../utils/array-has-items';
import { columnHasActions } from '../utils/column-actions';
import getSemanticTableProps from '../utils/get-semantic-table-props';
import isLastIndex from '../utils/is-last-index';
import getRowNumber from '../utils/get-row-number';

import ColumnActions from './column-actions';
import { BodyRow } from './renderers';
import RowActions from './renderers/row-actions';

export interface ITableProps {
  // used for rendering loading animation and empty rows
  loading?: boolean;
  expectedRowCount?: number;
  headless?: boolean;

  // semantic ui react props https://react.semantic-ui.com/collections/table/
  attached?: boolean | string;
  basic?: boolean | string;
  className?: string;
  collapsing?: boolean;
  color?: string;
  compact?: boolean | string;
  definition?: boolean;
  fixed?: boolean;
  inverted?: boolean;
  padded?: boolean | string;
  singleLine?: boolean;
  size?: string;
  striped?: boolean;
  structured?: boolean;
  textAlign?: string;
  verticalAlign?: string;
}

export default function Table({ loading, expectedRowCount, headless, ...rest }: ITableProps): JSX.Element {
  const {
    getTableProps,
    headerGroups,
    state: {
      pageIndex = 0,
      pageSize = 1,
    },
    _rowsToUse: rows, // @todo: handle this more gracefully inside addOns
    prepareRow,
    availableTableActions,
    onCustomSelectionChange,
  } = useRelatableStateContext();
  const { className = '', ...semanticTableProps } = getSemanticTableProps(rest);
  const onSelectAllClick = useCallback(
    (select: boolean) => {
      onCustomSelectionChange!(rows, select);
    },
    [onCustomSelectionChange, rows],
  );

  return (
    <SemanticTable {...getTableProps()} {...semanticTableProps} className={`relatable__table ${className}`}>
      {!headless && <SemanticTable.Header>
        {map(headerGroups, (headerGroup, index: number) => (
          <SemanticTable.Row
            {...headerGroup.getHeaderGroupProps()}
            className="relatable__table-row relatable__table-header-row">
            <SemanticTable.HeaderCell
              className="relatable__table-cell relatable__table-header-cell relatable__table-header-actions-cell"
              collapsing>
              {isLastIndex(headerGroups, index) &&
              <RowActions rows={rows} onSelectClick={onCustomSelectionChange && onSelectAllClick}/>}
            </SemanticTable.HeaderCell>
            {map(headerGroup.headers, (column: any) => {
                const headerProps = column.getHeaderProps();
                const hasActions = isLastIndex(headerGroups, index) && columnHasActions(column, availableTableActions);

                if (column.colSpan === 0) return null;

                return hasActions
                  ? <ColumnActions
                    column={column}
                    {...headerProps}/>
                  : <SemanticTable.HeaderCell
                    {...headerProps}
                    colSpan={column.colSpan !== undefined ? column.colSpan : headerProps.colSpan}
                    className="relatable__table-cell relatable__table-header-cell">
                    {column.render('Header')}
                  </SemanticTable.HeaderCell>;
              },
            )}
          </SemanticTable.Row>
        ))}
      </SemanticTable.Header>}
      <SemanticTable.Body>
        {map(rows, (row, index: number) => {
          prepareRow(row);

          return (
            <BodyRow
              row={row}
              rowNumber={getRowNumber(index, pageIndex, pageSize)}
              loading={loading}
              {...row.getRowProps()}
            />
          );
        })}
        {/* render empty rows when passed expectedRowCount and no data */}
        {!arrayHasItems(rows) && loading && expectedRowCount
          ? map(Array(expectedRowCount), (_, index) => (
            <SemanticTable.Row key={`empty-row-${index}`} className="relatable__table-row relatable__table-body-row">
              <SemanticTable.Cell className="relatable__table-cell relatable__table-body-cell" colSpan="100%">
                <div className="relatable__table-body-cell-loader"/>
              </SemanticTable.Cell>
            </SemanticTable.Row>
          ))
          : null
        }
      </SemanticTable.Body>
    </SemanticTable>
  );
}